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@ThreadSafe public interface Observable
Interface used to register listeners
. Implementations should use a ChangeObservers
to actually
manage the listeners.
Method Summary | |
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boolean |
register(Observer observer)
Register the supplied observer. |
boolean |
unregister(Observer observer)
Unregister the supplied observer. |
Method Detail |
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boolean register(Observer observer)
observer
- the observer to be added; may be null
boolean unregister(Observer observer)
observer
- the observer to be removed; may not be null
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